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E. WORMS & A. S. ZWIERZOHOWSKI. MEGHANISM FOR GONVBRTING MOTION.

No. 451,175. Pa,tentedAp1. 28, 1891.

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E. WORMS & A. S. ZWIERZGHOWSKI. MBOHANIOM FOR OONVBRTING MOTION.

NO. 451,175. Patented Apr 8 l.

UNITE STATES EUGENE VORMS AND AL IXANDRE SIGISMOND ZWIERZOHOXVSKI, OF PRIS, FRANCE.

MECHANISM FOR CONVERTING MOTION.

SPECIFICATION forming part of Letters Patent No. 151,175, dated April 28, 1891.

Application filed September 27, 1890. Serial No. 366,301. (No model.) Patented in France August 7, 1890,1`T0. 207,488, andin England August 12, 1890, No. 12,617.

To all whom it may crmcern:

Be it known that we, EUGNE TORMS and ALEXANDRE SIGISMOND ZWIERZCHOWSKI, both citizens of the French Republic, and residents of Paris, France, have jointly invented certain new and useful Improvements in Mechanisms for Converting Motion, (for which patents have been granted in France, No. 207,-i88, dated August 7, 1890, and in England, No. 12,617, dated August 12, 1890,) of which the following is a specification.

This invention relates to a mechanism to be interposed between a reciprocating part, as the piston-rod of an engine,'and a Crank, whereby the motion of one of said parts may be converted into that of the other. This inechanism takes the place of the usual pitman or Connecting rod, and its object is in part to enable the length of the machine to be reduced, in part to enable the ordinary guides for the piston-rod to be dispensed with, and' in part to utilize a larger percentage of the theoretical force of the motor-fluid than is attained in motors with Crank-motions as ordinarily Construoted.

Our invention will be fully described hereinafter, and its novel features carefully defined in the olaim.

In the accompanying drawings,which serve to illustrate our improved converting mechanism, Figure 1 is a side elevation thereof shown as applied to a reciprocating engine, the cylinder of which is represented in section. Fig. 2 is a diagrammatic view showing the moving parts of the mechanism in dotted and broken lines in two positions, the one representing the parts as they stand when the engine is on the dead-center and the other representing them as they stand when the Crank is at an angle of ninety degrees thereto.

A is the cylinder of the engine; B, the piston-rod; C, the piston; K, the shaft to be driven, and U the Crank thereon. These parts maybe constructed in the usual manner, and B may be any reciprocating part.

The intermediate mechanism which Couples the piston-rod to the Crank-pin and which forms the novel feature of our invention comprises a four-sided frame loosely jointed or articulated and Consisting of a lever, as I-l, fulcrumed at I to some non-moving part J, a leVer F, eoupled to the Crank-pin at 3, and two bars E and G, which Couple together the two levers on opposite sides of the fulcrum I. The bar E is eoupled to the levers H and F at the points 1 and 2, respectively, and the bar G is eoupled to said levers at the points 4 and 5, as shown. The piston rod B is eoupled to the bar E by means of a short link D.

The operation of this intermediate mechanism is well illustrated in Fig. 2, wherein the broken lines show the position of the parts when the Crank is onone of the dead- Centers, and the dotted lines show their position when the Crank stands at ani angle of ninety degrees with the ConneCting-rod. If the Coupling-point 1 of the bar E be moved along lever H nearer to the fulcrum I and the Coupling-point 2 be shifted correspondingly on the lever F, so as to maintain the parallelism of the bars E and G, the stroke of the piston will be decreased, and if the bar E be shifted in the opposite direction the stroke of `the piston will be increased, the throw of the Crank remaining the same in both Cases.

In ordinary motors having crank-motions the reotilinear motion of the piston is con- Verted directly into continuous circular motion and the length of leverage of the Crank on the engine-shaft is only half the length of the travel of the piston. With ourimproved mechanism this Condition does not exist, as will be readily seen by inspection.

Having thus described ourinvention, We claim- The combination, with a reciprocating part, as the piston-rod of an engine, and a rotating part, as the Crank of an engine, of an intermediate mechanism between said rod and Crank, said mechanism Consisting of a lever I-I, with arms of unequal length, fulcrumed on a non-moving or fixed part, a lever F,

couplecl at one encl to the Crank, two parallel our names in the presenee of two subscrbing bars E and G, of equal length, which oouple Witnesses. together the two levers 011 opposite sides of EUGNE WORMS the fulerum I and a link D eoupled at onew Su ND ZWIERZCHOWSKL end to the pisyton-rod and aft the other end ALEXANDPE SIGI i O to the level' H at the point where Ihe bar E Vtnesses: is coupled thereto, substantially as set forth. R. J. PRESTON, l

In witness Whereof Wehave hereunto signed MICHEL COQUERT. 

